CVE-2026-66801
Microsoft Xbox Remote Code Execution Vulnerability
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.
| Vendor | microsoft |
| Product | microsoft gdk |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Nov 10, 2026 |
| Last Updated | Nov 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft GDK
1.0.0.0 < 2610